SketchEl!(4,3)
C=-8.1500,3.4500;0,0,i3
C=-6.8510,4.2000;0,0,i0
O=-6.8510,5.7000;0,0,i0
C=-5.5519,3.4500;0,0,i3
1-2=1,0
2-3=2,0
2-4=1,0
!End
